On 2009-06-03, Mikolaj Kucharski <miko...@kucharski.name> wrote:
> Can anyone give me example of embedded system (Soekris-like) which is
> known to handle PF traffic + VPN traffic at MBit/s throughput, and
> packets per second level, generated by home users browsing web,
> skyping, playing games on-line (low latency), at the same time.
> *Fanless* and which can run OpenBSD of course.
>
> I hope I'm not too demanding, is there anything like that?
pcengines alix and soekris 5501 are quite a lot faster than the
soekris 45xx. if you're doing a lot of VPN traffic then something
with one of the VIA processors that has hardware AES will cope
better, but they're quite a lot more expensive than an alix
and I don't have personal experience to recommend a particular
box.
packets-per-second affects things a lot more than bandwidth use.
I don't know what skype uses in terms of PPS, and I guess on-line
games could vary by quite a lot.
running tcpbench with this layout: server -> alix (routed) -> laptop,
and varying MTU ("route add laptop -mtu 128" on the host running the
tcpbench sender), then measuring CPU on the alix while this happens:
MTU 1500; 25% idle, throughput 70Mb/s
MTU 1024; 5% idle, throughput 60Mb/s
MTU 512; 0% idle, throughput 33Mb/s
MTU 128; 0% idle, throughput 10Mb/s
(without vpn). you might be able to run a comparison on your
hardware and see how it compares, see whether you think it'll be
enough of an improvement, or if you'll need something faster.
> On Tue, Jun 02, 2009 at 11:10:14PM +0000, Stuart Henderson wrote:
>> you're probably overloading the CPU. try -current, sis(4) has
>> MCLGETI now which should mitigate things a bit. still, that's a
>> lot of load you're putting on a little 486 which will almost
>> certainly be restricting your throughput.
>
> Thanks Stuart.
